Hoping to win a trip to Miami, Lizzie, Miranda and Gordo team up to enter the school's ""Fact-athlon."" Their rival team consists of Kate Sanders, Larry Tudgeman and Claire Miller. But things start to look a little bleak when the faculty advisor Lizzie and company chose is replaced by substitute teacher Mr. Dig. But to their surprise, Mr. Dig manages to turn studying into something fun and interesting with his unusual approaches. By the time the competition starts, Lizzie's team is confident while Kate, Larry and Claire are feeling the pressure. But Kate's team beats Lizzie's team badly when there are too many questions about dates and names rather than ""how and why"" problems. Kate and her teammates gloat over their win and Mr. Dig is ready to leave his job at the school because he thinks he let the team down, But Lizzie, Gordo and Miranda convince him they they actually did learn a lot and that they had a good time doing it.
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Cast of Lizzie McGuire
Hilary DuffLizzie McGuire
LalaineMiranda Sánchez
Jake ThomasMatt McGuire
Hallie ToddJo McGuire
Robert CarradineSam McGuire
Adam LambergGordo Gordon
Ashlie BrillaultKate Sanders
Clayton SnyderEthan Craft
Kyle DownesLarry Tudgeman
Christian CopelinLanny Onasis
Carly SchroederMelina Bianco
Davida WilliamsClaire Miller
Arvie Lowe, Jr.Mr. Dig
Dot-Marie JonesKelly
Phill LewisMr. Tweedy
Brad GrunbergSecurity Guard
Armando MolinaEdward Sánchez
Dyana OrtelliDanielle Sánchez
Rachel SnowVeruca Albano
Haylie DuffAmy Sanders
Craig AntonMr. Pettus
Sebastian JudeOscar
Byron FoxDanny Kessler
Chelsea WilsonParker McKenzie
Kim Simms ThomasMs. Dew
Michael MantellHoward Gordon
Nicholas Edwin BarbReggie
Candy Ann BrownMrs. Stebel
Jeremy J. BargielJeremy
Tricia CruzTeacher
Kathryn KatesMrs. Carrabino
Raja FenskeLi Tarak
Anastasia BaranovaCara Gunther
Joy JorgensenHead Cheerleader
Jennifer FreemanAlix
Amy CastleAndie Robinson
Kyla PrattBrooke Baker
Sara PaxtonHolly
Frankie MunizHimself
Lamont ThompsonReconstruction Guy
Eileen BrennanMarge
Aaron CarterHimself
Orlando BrownTravis Elliot
Sandy FoxClover
Zachary QuintoDirector
Joseph WhippGrubby Longjohn
David CarradineHimself
Amelia MarshallMrs. Miller
Erik EstradaAlejandro
Haley HudsonClementine
Shalim OrtizCarlos
Lyle KanouseDaisy
Pat Crawford BrownMrs. Robinson
Rachelle CarsonDonna Pinto
Shelley BermanNobby Frostybump
Evan Lee DahlJackson Myers
Mickey JonesSonny Reid
Andrew McFarlaneThomas
Dabbs GreerMoe
Greg BakerSecurity Guard
Sean MarquetteAdam Burton
Sonya EddyPhotographer
Diana C. WengMrs. Shin
Randy McPhersonPoliceman
Jackie AngelescuAngel Lieberman
Page LeongMrs. Wortman
Ty UpshawMr. Coppersmith
Sybyl WalkerMiss Moran
Troy RowlandMr. Lang
Traci MelchorNatasha
Elizabeth DensmoreJessica
Rick MarottaHimself
Shan ElliotRyan Adams
Kevin L. JacksonMaitenance
Alison MartinRoberta Gordon
Joe RokickiRonny Jacobs
Maria BeckZuzu
Daniel ChodosRabbi
David RosenDavid
Catherine ChiarelliEthan's Stepmom
Jake BlakeySonny
Matteo CrismaniClark Benson
Grant ThompsonEwan Keith
Doris RobertsGrandma Ruth